“…For example, the boehmite-to-gamma-alumina transformation temperature has been variously reported as 120°, 300°, 360°, 450°, 480°, or 500°C. (Bielanski and Sedzimir, 1960 1959; Lenné, 1961; Michel, 1957;Torkar and Bertsch,• 1961). Such uncertainties were attributed to the use of various experimental techniques, solids of various compositions, and some lack of regard for the effects of particle size, surfaces, and ambient atmosphere.…”